对图片进行压缩处理

composer require intervention/image

<?php

namespace app\api\controller;

use Intervention\Image\ImageManagerStatic as Image;

class Test extends Base
{
    public function index() {

        $folderPath = './upload';
        $files = $this->getFilesInFolder($folderPath);
       // 输出所有文件路径
        foreach ($files as $file) {
            $fileExtension = pathinfo($file, PATHINFO_EXTENSION);
            if ($fileExtension == 'png') {
                $image = Image::make($file);
                // 设置压缩质量（可选）
                $image->limitColors(256);
                $image->encode('png', 80);
                $image->save($file);
            } else {
                if ( class_exists('Imagick')) {
                    $small_image = new \Imagick($file);
                    $small_image->setImageCompression(\Imagick::COMPRESSION_JPEG);
                    $small_image->setImageCompressionQuality(90);
                    $small_image->writeImage($file);
                    $small_image->clear();
                    $small_image->destroy();
                }
            }
        }
        halt('执行完成！');

    }


    function getFilesInFolder($folderPath) {
        $fileList = [];
        $files = scandir($folderPath); // 获取文件夹中的所有文件和文件夹

        foreach ($files as $file) {
            if ($file == '.' || $file == '..') {
                continue;
            }

            $filePath = $folderPath . '/' . $file;

            if (is_dir($filePath)) { // 如果是文件夹，则递归调用函数
                $fileList = array_merge($fileList, $this->getFilesInFolder($filePath));
            } else { // 如果是文件，则添加到文件列表
                $fileExtension = pathinfo($filePath, PATHINFO_EXTENSION);
                if (in_array($fileExtension, ['ico','icon','jpg','pem','png','jpeg','svn'])) $fileList[] = $filePath;
            }
        }

        return $fileList;
    }

}